Issue 199 [1] states:
"Possible error conditions: mismatch between the media type attribute
and the actual data."
I would like to suggest that we resolve this issue by saying that this
case is no different than the case of a message not conforming with the
schema specified in WSDL for that message.
For example, this case is very similar to an element being declared as
xsd:int and containing alpha characters. OR
<IntElement xsi:type="xsd:int">abc</IntElement>
-Anish
[1]
http://dev.w3.org/cvsweb/%7Echeckout%7E/2002/ws/desc/issues/wsd-issues.html#x199